Reciprocating saw



June 19, 1923.

I. H. SANDAGE RECIPROCATING SAW Filed Feb. 27 1922 2 Sheets-Sheet 1 Ju ne 19-, 1923;

I. H.. SANDAGE RECIPROGATING SAW Filed Feb. 27, 1922 2 Sheets-Sheet 2 1.11. SQ =1, 1 q.

. ATTORNEY.

Patented June 19, 1,923.

stars Pater" ISAAC H. SANDAGE, OF SANDIPOINT, IDAHO.

RECIPE-COATING SAW.

Application filed February 27,1922. Serial No. 539,662.

T 0 all whom it may concern:

Be it known that I, ISAAC H. SANDAGE, a citizen of the United States, residing at Sandpoint, in the county of Bonner and State of Idaho, have invented certain new and useful Improvements in Reciprocating Saws, of which the following is a specification.

This invention relates to sawing machines of the class of hand operated drag saws, and has for one of its objects to provide a device of this character of improved construction and increased etliciency.

Another object of the invention is to provide a device of this character having means whereby the device may be readily adapted to logs of varying sizes without material structural change. 7

Another object of the invention is to provide a device of this character having im proved means for producing the requisite tension and for holding the saw to its work and causing it to follow up thecutting.

lVith these and other objects in view the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claim, and in the drawings illustrative of the preferred embodiment of the invention:

Figure l, is a side elevation of the improved apparatus.

Figure 2, is an elevation of the adjustable v support for the beam of the improved apparatus, partly in sections.

Figure 3, is an enlarged sectional detail on the line 33 of Fig. 1.

Figure A, is an enlarged sectional detail on the line H of Fig. 1.

Figure 5,is a perspective-detail of a portion of the operating mechanism.

Figure 6, is a detail illustrating a modification in the construction to enable the device to be employed on relatively large logs.

Figure 7, is a section on the line 77 of Figure 6.

The improved apparatus comprises a main supporting beam 10, and a supporting horse or stand, near one end, the latter comprising main side members or legs 11 and 12' bolted or otherwise secured to the beam, as shown, by a bolt 13 having a wing nut 14, so that the beam and legs may be easily separated when required. I

The legs 11 and 12 are provided with extensions 15 and 16 adjustably coupled to the legs 11 and 12 by sleeves l7 and'lS and set screw 19. I

At their lower ends the legs 11 and 12 are connected by a tie member 20, and coupled to the tie member is a foot rest 21 to enable the operator to apply his weight to holdthe horse or stand and the beam attached thereto in position.

Attached to the beam 10 is a wear plate 22, and extendingthroughthe beam and the plate, is a relatively'large pivot bolt 23, and mounted for rotation on the pivot bolt is a sleeve 24 having a flange 25, and mounted on the sleeve is an arm'26,"the flange 25 being secured to the arm by screws 27 or other suitable fastening devices. A clamp nut 28 bears against the outer end of the sleeve 24: and the'adjacent portion of the arm 26. By this means the arm 26 is mounted to swing upon the pivot bolt, and the friction and wear is borne by the portions 22 and 25, which may be easily renewed when worn.

Attached to the beam 10 at each side of the plate 22 and spaced therefrom are hangers 29, and connected to the hangers and to.

the arm 26 are springs 30, the latter operating to hold the arm 26 yieldably and normally in vertical position, and. to return it to normal position when released, as hereafter explained.

A drag saw is shown conventionally at 31, and is coupled at 32 to the lower end of the arm 26 by a connecting member 33, the arm having a plurality of spaced apertures to receive the member 32 to enable the member 33 and the saw attached thereto to be adjusted to control the throw of the saw.

Extending through the beam 10 nearone end is a wear sleeve 3t having a lateral flange 35, the latter to. receive fastening screws or the like.

Extendingthrough the sleeve 34: and'its flange 35, is a pivot bolt 36, and mounted ion for rotation on the pivot bolt isanoperat ing handle or lever 37. Disposed'aroundthe bolt 36 and bearing against the, flange 35 is a Wear plate 39,;and surrounding thebolt externally of the member 39 and bearing over adjacent portions of the latter, is a, shell member 40, the shellhaving serrations or teeth 41 in its outer face.

Swinging upon the bolt 36 externally of theshell member 40 is an operating member sent-ed in :Figure 3.

A clamp nut 44 engages the bolt 36 and operates to hold the teeth or serrations 4l and 43 in locked position to enable the'operating member 42 to be adjusted and held at any desired angle relative to thehandle '37- A connecting rod 45 is pivot-allyconnected at its ends as shown at 46 and 47 to the members 26 and 42..

Pivoted at 48 to the beam 10 is a rod 49 having a grooved bearing roller 50 at the free end in constant engagement with the back edge of the saw 31.

'Pivoted at 51 to the beam 10 is a cam device 52 operating to engage the rod 49 and thus control the position ofthe rod.

Pivoted at 58 to the beam 10 is-an op'- erating lever 54, the latter coupled ;t01the cam device 52 by a rod '55. Thelever .54 is provided with a pawl device 56 .coacting with a notched segment 57 as shown in :Figure 1. By this means the position of the cam device 52 can be controlled and the latter in turn can control the action of the roller 50 upon the saw and enable the operator to follow up the cutting action, and

-maintain the saw in operative or cutting 13031131011. 7

Extendingthrough the beam 10 is a rod 58 having a hook 59 at the lower end and a lever nut 60 at the upper end whereby the rod may be adjusted to control theposition of the hooked terminal 59. A- lock nut 61 is applied to the rod 58 to hold it in adjusted position. 1

A relatively large grab hook 62 is coupled log being represented conventionally'at'64. Disposed through the beam'lO at the end nearest thelog 64 is a pointed stud 65 held in position by clamp nuts 66 and 67, with its lower pointedend adapted to be driven into the log and coacting with the hook 62 to hold the log from rolling during the reciprocatory action otthe saw.

A notched saw guide block'68 isattached to the beam 10a) receive'the upper edge of the saw and retain it in position relative to by coupling the holding devices 62 and 65 in position, stands upon the 006 board2l, or at least applies sufiicient weight thereto to hold the horse? or stand in position, and operates the handle '37 vertically and thus causes the saw to'xreciprocate and cut through position upon the link by a clamp nut 73. The members 69 and 72 are provided With coacting serrations 74 and 7 5 in'their conb v 1 1n ad usted position.

A bar 75, corresponding to athe bar33, 1s

irontin races to enable .them to be locked attached at 76 to the saw 31 and coupled pivotally at 77 and 7 8 to radius bars- 7 9 and 80, the latter in turn coupled at -81 and 82 to the bar 72.

The coupling rod 45 ispivoted at 88'to the bar "i9. I

. By this arrangement if alarger log is to be sawed, the clamp nut 73, is loosened to release the teeth 73 and '74 a'ndthe link 69 turned upon its pivot .to enable the saw to be elevated to correspond to the larger log, and the nut 73 then retightened to hold the sawin its new position.

The cutting operation: is the same in both arrangements shown. I

The. improved device. is simple in construction, can be inexpensively manufactured and oi any required size, and op- The preferredembodimentof the invention .is disclosed in the drawings and set forth in the specification, butit will'be understood that -modifications within the sfcope oi the claimed invention may be-Inade in the construction without departing from the principle of the invention or sacrificing any .of its advantages.

Having thus described the invention, what is claimed as new is:

In an apparatus of the class described, a supporting beam, a link pivoted at-one end to said beam, an armpivoted at one-end to said link for swinging the'same, means" for adjustablylocking the .link to :the arm, coacting radius bars swinging at one end'from said beam in spaced relation. another bar pivotally coupled to the freeends of said radius bars and adaptedtobe coupled to a saw, andmeans attached to the other end of said link and to said radius bars for-swingingthe same, whereby the saw'may be actuated at varying heights.

ISAAC H. :SANDAGE. 

